diff --git a/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/CurrentUserInfoProcessor.java b/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/CurrentUserInfoProcessor.java
index eb72538506..d87a7f508e 100644
--- a/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/CurrentUserInfoProcessor.java
+++ b/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/CurrentUserInfoProcessor.java
@@ -20,6 +20,7 @@
  * =====
  */
 
+import com.fasterxml.jackson.databind.ObjectMapper;
 import com.walmartlabs.concord.sdk.Constants;
 import com.walmartlabs.concord.server.process.pipelines.processors.signing.Signing;
 import com.walmartlabs.concord.server.user.UserManager;
@@ -31,7 +32,7 @@
 public class CurrentUserInfoProcessor extends UserInfoProcessor {
 
     @Inject
-    public CurrentUserInfoProcessor(UserManager userManager, Signing signing) {
-        super(Constants.Request.CURRENT_USER_KEY, userManager, signing);
+    public CurrentUserInfoProcessor(UserManager userManager, Signing signing, ObjectMapper objectMapper) {
+        super(Constants.Request.CURRENT_USER_KEY, userManager, signing, objectMapper);
     }
 }
diff --git a/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/InitiatorUserInfoProcessor.java b/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/InitiatorUserInfoProcessor.java
index 43183311f4..9522e546cd 100644
--- a/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/InitiatorUserInfoProcessor.java
+++ b/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/InitiatorUserInfoProcessor.java
@@ -20,6 +20,7 @@
  * =====
  */
 
+import com.fasterxml.jackson.databind.ObjectMapper;
 import com.walmartlabs.concord.sdk.Constants;
 import com.walmartlabs.concord.server.process.pipelines.processors.signing.Signing;
 import com.walmartlabs.concord.server.user.UserManager;
@@ -31,7 +32,7 @@
 public class InitiatorUserInfoProcessor extends UserInfoProcessor {
 
     @Inject
-    public InitiatorUserInfoProcessor(UserManager userManager, Signing signing) {
-        super(Constants.Request.INITIATOR_KEY, userManager, signing);
+    public InitiatorUserInfoProcessor(UserManager userManager, Signing signing, ObjectMapper objectMapper) {
+        super(Constants.Request.INITIATOR_KEY, userManager, signing, objectMapper);
     }
 }
diff --git a/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/UserInfoProcessor.java b/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/UserInfoProcessor.java
index 5169a3487a..3bf2303f69 100644
--- a/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/UserInfoProcessor.java
+++ b/server/impl/src/main/java/com/walmartlabs/concord/server/process/pipelines/processors/UserInfoProcessor.java
@@ -20,17 +20,20 @@
  * =====
  */
 
-import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
-import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.fasterxml.jackson.databind.node.TextNode;
 import com.walmartlabs.concord.server.process.Payload;
 import com.walmartlabs.concord.server.process.pipelines.processors.signing.Signing;
 import com.walmartlabs.concord.server.sdk.ConcordApplicationException;
 import com.walmartlabs.concord.server.user.UserInfoProvider.BaseUserInfo;
 import com.walmartlabs.concord.server.user.UserManager;
-import org.immutables.value.Value;
 
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Optional;
+
+import static java.util.Objects.requireNonNull;
 
 /**
  * Collects and stores the current user's data.
@@ -40,19 +43,28 @@ public abstract class UserInfoProcessor implements PayloadProcessor {
     private final String key;
     private final UserManager userManager;
     private final Signing signing;
+    private final ObjectMapper objectMapper;
+
+    public UserInfoProcessor(String key,
+                             UserManager userManager,
+                             Signing signing,
+                             ObjectMapper objectMapper) {
 
-    public UserInfoProcessor(String key, UserManager userManager, Signing signing) {
-        this.key = key;
-        this.userManager = userManager;
-        this.signing = signing;
+        this.key = requireNonNull(key);
+        this.userManager = requireNonNull(userManager);
+        this.signing = requireNonNull(signing);
+        this.objectMapper = requireNonNull(objectMapper);
     }
 
     @Override
     public Payload process(Chain chain, Payload payload) {
-        BaseUserInfo info = userManager.getCurrentUserInfo();
+        var info = userManager.getCurrentUserInfo();
 
+        var result = objectMapper.convertValue(info, ObjectNode.class);
         if (signing.isEnabled()) {
-            info = sign(info);
+            Optional.ofNullable(info.username())
+                    .map(this::sign)
+                    .ifPresent(signature -> result.set("usernameSignature", signature));
         }
 
         Map<String, BaseUserInfo> m = new HashMap<>();
@@ -63,28 +75,11 @@ public Payload process(Chain chain, Payload payload) {
         return chain.process(payload);
     }
 
-    private BaseUserInfo sign(BaseUserInfo i) {
-        if (i == null || i.username() == null) {
-            return i;
-        }
-
+    private TextNode sign(String username) {
         try {
-            String s = signing.sign(i.username());
-            return SignedUserInfo.from(i).usernameSignature(s).build();
+            return TextNode.valueOf(signing.sign(username));
         } catch (Exception e) {
             throw new ConcordApplicationException("Error while singing process data: " + e.getMessage(), e);
         }
     }
-
-    @Value.Immutable
-    @JsonSerialize(as = ImmutableSignedUserInfo.class)
-    @JsonDeserialize(as = ImmutableSignedUserInfo.class)
-    public interface SignedUserInfo extends BaseUserInfo {
-
-        String usernameSignature();
-
-        public static ImmutableSignedUserInfo.Builder from(BaseUserInfo i) {
-            return ImmutableSignedUserInfo.builder().from(i);
-        }
-    }
 }